... PF>99%,THD<10% 4.High quality balalst, 30000hr ceiling light fixtureCeiling light fixture Power: 2*14w,2*28w,2*35w,2* ... with reflector and film2.Adopt high quality ballast,comply with 3C,TUV-CE standard3.High Power Factor(PF>99%),low ... to 45%7.Installation:Ceiling mounting, series connectionApplication: House lighting, shopping mall,refrigeratory,show case,hotel,office etc ceiling light fixture (2*28w) ...